IEE Raichur - kuidfc

NKUSIP (Package IV – Bellary)Tranche I Sub Projects in Raichur TownIEE ReportTable 12 Investment Program AlternativesSub-ComponentSewerageSystemSuitability of Selected AlternativeThe best alternative for the sewerage system is to design the system basedon gravity flow. The proposed gravity system will be simple in operation andrequire less man power and importantly does not require energy. The naturalgravity is utilized to run the system.In terms of location of the treatment plants, as it is proposed to reconstructand upgrade the existing plants, no alternative sites were identified. However,these sites are ideally located away from habitation and were selected basedon the topography.There are number of options to treat the wastewater to the standards of eitherfor river discharges or for land disposal after treatment. The options likeattached growth aerobic or anaerobic systems or suspended growth systemscan be adopted. However, as the existing STPs are stabilization pond basedplants and hence it is proposed to upgrade these STPs with FAL technology.Storm waterdrainageOnly rehabilitation of existing drains is proposed and therefore no alternativeswere considered. However, the best alternative of gravity flow system isretained.Water SupplyThe best alternative for water supply is to design the system based on gravityflow. However, due to topography and required pressure at the consumerend, the system is designed as partly gravity and partly pumping.As the existing system losses are at higher side, reducing the losses andimproving the efficiency of the system is identified as one of the importantcomponent under NKUSIP. Developing of a pumping station at the existingintake is proposed. This is necessitated as the existing pumping capacity isnot sufficient. It is proposed to use high efficiency pumps to reduce the energyloads.Roads upgradationRoads considered for improvement are selected based on the traffic and itsimportance in connectivity and environmental and social issues involved.No acquisition of land/structure is involved in the road improvement. It involvesno tree cutting.KUIDFC 31 Span & Voyants